using System;
using System.Linq;
using System.Net.Http;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json.Linq;
using Sockeye.Models;
using Sockeye.Util;

namespace Sockeye.Biz
{


    /// <summary>
    /// Process purchases into licenses
    ///
    /// </summary>
    internal static class SockBotProcessPurchasesIntoLicenses
    {
        private static ILogger log = Sockeye.Util.ApplicationLogging.CreateLogger("SockBotProcessPurchasesIntoLicenses");
        private static DateTime lastSweep = DateTime.MinValue;
        private static TimeSpan PROCESS_V7_AGE = new TimeSpan(0, 5, 0);//Don't process a v7 order until at least 5 minutes old as it doesn't always come in at once
#if (DEBUG)
        private static TimeSpan PROCESS_EVERY_INTERVAL = new TimeSpan(0, 0, 30);//every 30 seconds during development
#else
        private static TimeSpan PROCESS_EVERY_INTERVAL = new TimeSpan(0, 5, 10);//every 5 minutes 
#endif
        ////////////////////////////////////////////////////////////////////////////////////////////////
        // DoSweep
        //
        public static async Task DoWorkAsync()
        {
            //This will get triggered roughly every minute, but we don't want to check that frequently
            if (DateTime.UtcNow - lastSweep < PROCESS_EVERY_INTERVAL)
                return;

            if (ServerBootConfig.MIGRATING) return;//don't do this during migration (migration is one time only so can remove after up and running)

            log.LogDebug("Process purchases into licenses starting");
            await ProcessPurchasesIntoLicenses();

            lastSweep = DateTime.UtcNow;
        }

        private static async Task ProcessPurchasesIntoLicenses()
        {
            using (AyContext ct = Sockeye.Util.ServiceProviderProvider.DBContext)
            {

                //get a list of all actionable purchases grouped by customer id
                var purchaseList = (await ct.Purchase
                                 .Where(z => z.Processed == false
                                             && z.LicenseId == null
                                             && z.CustomerId != null
                                             && (z.PGroup == ProductGroup.AyaNova7 || z.PGroup == ProductGroup.RavenPerpetual || z.PGroup == ProductGroup.RavenSubscription))
                                 .OrderByDescending(z => z.PurchaseDate)
                                 .ToListAsync()).GroupBy(z => (long)z.CustomerId);

                try
                {
                    foreach (var purchaseGroup in purchaseList)
                    {
                        //Iterate the group and qualify it
                        bool isRavenPerpetual = false;
                        bool isRavenSubscription = false;
                        bool isV7 = false;
                        bool isLessThanV7Age = false;

                        foreach (var purchase in purchaseGroup)
                        {

                            if (purchase.PGroup == ProductGroup.AyaNova7)
                                isV7 = true;

                            if (purchase.PGroup == ProductGroup.RavenPerpetual)
                                isRavenPerpetual = true;

                            if (purchase.PGroup == ProductGroup.RavenSubscription)
                                isRavenSubscription = true;

                            if (DateTime.UtcNow - purchase.PurchaseDate < PROCESS_V7_AGE)
                                isLessThanV7Age = true; ;
                        }

                        //sanity checks should never be mixed
                        if ((isRavenPerpetual && isV7))
                        {
                            var err = $"SockBotProcessPurchasesIntoLicenses both raven perpetual and v7 in same customer's purchase group First record order number: {purchaseGroup.First().SalesOrderNumber}";
                            //serious issue requires immediate notification
                            await NotifyEventHelper.AddOpsProblemEvent(err);
                            log.LogError(err);
                            continue;
                        }

                        if ((isRavenSubscription && isV7))
                        {
                            var err = $"SockBotProcessPurchasesIntoLicenses both raven subscription and v7 in same customer's purchase group First record order number: {purchaseGroup.First().SalesOrderNumber}";
                            //serious issue requires immediate notification
                            await NotifyEventHelper.AddOpsProblemEvent(err);
                            log.LogError(err);
                            continue;
                        }

                        if ((isRavenPerpetual && isRavenSubscription))
                        {
                            var err = $"SockBotProcessPurchasesIntoLicenses both raven perpetual and raven subscription in same customer's purchase group First record order number: {purchaseGroup.First().SalesOrderNumber}";
                            //serious issue requires immediate notification
                            await NotifyEventHelper.AddOpsProblemEvent(err);
                            log.LogError(err);
                            continue;
                        }

                        //if v7 skip for this iteration to ensure multiple add-on's have all arrived from mycommerce
                        if (isV7 && isLessThanV7Age)
                            continue;



                        //if v7 license then lookup last license for same pgroup for same customer, if none then consider it a new license fresh
                        //if there is one and it's not entirely expired then duplicate and fixup from purchases in this group

                        //IF raven license and have what is likely a recognizable dbid that ends in an = symbol then just make the new license and cancel the last one if that's necessary








                        // log.LogDebug($"Processing purchase  id:{purchaseGroup[0].Id},purchasedate:{purchaseGroup.PurchaseDate}, custid:{purchaseGroup.CustomerId}");




                    }
                }
                catch (Exception ex)
                {
                    var err = "SockBotProcessPurchasesIntoLicenses error running job";
                    //serious issue requires immediate notification
                    await NotifyEventHelper.AddOpsProblemEvent(err, ex);
                    log.LogError(ex, err);
                }

            }
        }






        /////////////////////////////////////////////////////////////////////

    }//eoc


}//eons